As our planet orbits the sun, it swoops through clouds of extraterrestrial dust — and several thousand metric tons of that material actually reaches Earth's surface every year, new research suggests.
During three summers in Antarctica over the past two decades, researchers collected more than 2,000 micrometeorites from three snow pits that they'd dug. Extrapolating from this meager sample to the rest of the world, tiny pebbles from space account for a whopping 5,200 metric tons of weight gain each year , researchers report in the April 15 Earth and Planetary Science Letters .
5,200 tons of cosmic dust fall to Earth each year | KXAN Austin
(NEXSTAR) – Cosmic dust falls to Earth each year, and now scientists have estimated just how much of the tiny particles from comets and asteroids make it to the green planet.
According to a new study published in the journal Earth and Planetary Science Letters , an estimated 5,200 tons of space dust lands on Earth every year. That’s equivalent in weight to about 1,000 adult elephants.
As you can imagine, it’s tricky to quantify extraterrestrial dust. But researchers in Antarctica developed a method that allows them to track the quantity of space dust in snow, which they extrapolated to estimate the yearly output of space dust.
E.T. Highway has welcomed Earthlings for 25 years | WJBF
Nevada state officials wanted to generate tourism and new-found buzz about the secretive Area 51 base nearby, but in turn also helped promote one of the biggest alien invasion movies of all time.
The sign that marks the start of the E.T. Highway has itself become a tourist attraction over the years. The main sign is located a little over 100 miles north of Las Vegas just off Highway 93 between Alamo and Rachel.
It's an obligatory photo-stop for visitors and gets covered with stickers every few weeks. The county had to raise the sign out of reach for most back in September 2019 before the Storm Area 51 event.
Philosopher UFOlogist says humans are not ready to make contact | KTAB - BigCountryHomepage.com
MYSTERY WIRE — If extraterrestrials are real and are present on earth, why haven't they landed on the white house lawn or in front of the United Nations? Why haven't they made an unequivocal demonstration as a way to announce their presence?
Even for the most committed UFO researchers don't have a good answer for these questions. They believe in an alien presence and believe these alleged visitors have appeared in our skies for centuries, but the sightings are often brief and alleged interactions are deemed not credible by the scientific community.
Planet + Carbon Mapper: Space News, April 2021 — Space Business — Quartz
Artificial intelligence for space | EurekAlert! Science News
IMAGE: SONATE-2 in orbit: Visualisation of the new technology testing satellite for highly autonomous payloads and artificial intelligence. view more
Suddenly, circular holes were visible on the surface of Mars that were not there before. On photos of Saturn's moon Enceladus, geysers were discovered that hurl powerful fountains of steam towards space. And on the images sent to Earth by the Mars rover Curiosity, structures were found that look like fossilised worms.
Perseverance's mission to Mars and the Michigan connection
(WXYZ) — NASA's incredible Perseverance mission to Mars has a Michigan connection and we're examining it during tonight's 7 UpFront report.
The rover touched down on the red planet just a few weeks ago, giving us stunning images the likes of which we've never seen before.
University of Michigan Professor of Aerospace Engineering Jesse Capecelatro is joining us to talk about it.
"So this has been a very exciting time. And, I guess for context, I joined the University of Michigan in 2016," Capecelatro said. "And that's when we started working on this project. So I've been working with folks directly involved with that landing, but the work we're doing is specifically targeted to all the future missions coming up. So that's sample return, and crude missions eventually sending people to Mars. But what we're very interested in is all the data coming out from Perseverance.
Kyeong Ja Kim | NASA
Week in Tech: Making Concrete Without Cement | Architect Magazine
Researchers from the University of Tokyo's Institute of Industrial Science have figured out how to produce concrete without using cement, the traditional binder made of clay and calcined lime. Using a reaction between alcohol and a catalyst, the researchers ultimately bonded the fine aggregate, or sand particles, together, according to a university press release.
New York–based nonprofit Community Solutions has raised a $100 million fund to combat homelessness in urban areas. However, their approach differs from traditional attempts to increase the overall housing stock by building new affordable housing units. Instead, Community Solutions buys existing multifamily residences and lowers unit rents, creating supportive housing communities located near existing employment opportunities and social service organizations.
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